乙型肝炎血清全部阴性。
Study on the Anti-HBV Material Foundation of Zijingantai;
没有物质基础，不具有真实性。
Most people in the region become infected with HBV during childhood.
该地区大多数人在儿童时期即已感染乙型肝炎病毒。
HBV can be transmitted from a family member to infant in early childhood.
1乙肝病毒可通过家庭成员传染给婴儿。
The diagnosis of HBV infection is generally made on the basis of serology.
诊断乙型肝炎病毒感染，一般的基础上作出的血清。
Many studies have been made in the field of gene therapy for HBV infection.
探索以基因治疗为主要手段的抗hbv感染治疗的研究是研究热点之一。
The function of cell immune was low in patients with chronic HBV infection.
慢性HBV感染者细胞免疫功能低下。
Objective To investigate the role of cell mediated immunity in HBV infection.
目的进一步明确外周血细胞免疫在HBV感染过程中的作用。
Construction of HBV targeted ribonuclease and its expression in 2.2.15 cell line.
HBV靶向核糖核酸酶真核表达载体的构建及其在2.2.15细胞内的表达。
It is estimated that 20-30% of persons with HBV infection could benefit from treatment.
据估计，20- 30%的乙肝病毒感染者能够从治疗中获益。
Objective: To study the relationship between the HBV pre-C mutant and the host immunity.
目的：探讨慢性乙型肝炎患者HBV前C区变异与宿主免疫之间的关系。
Some gene position's mutation might have association with the HBV intrauterine infection.
本研究从HBV基因突变入手，进一步探讨可能与宫内感染发生有关的突变位点。
Objective To study the relationship between fetal infection and placental infection of HBV.
目的研究胎儿感染乙型肝炎病毒与胎盘感染之间的关系及其意义。
Conclusion: Lamivudin is efficient and safe medicine in the treatment of CHB and HBV carrier.
结论：拉米夫定治疗慢性乙肝及乙肝病毒携带者安全有效。
To prevent HBV intrauterine infection is very difficult for its mechanism not being known clearly.
对于HBV宫内感染目前尚无有效的预防措施，究其原因是宫内感染机制不明。
To prevent HBV intrauterine infection is very difficult for its mechanism not being known clearly.
对于HBV宫内感染目前尚无有效的预防措施，究其原因是宫内感染机制不明。
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